# clm_EB2E8F209197

subject: Claude 2.1 (/record/claude-2-1.md)  
predicate: context_window  
value: 200K token context window  
valid_from: 2023-11-21  
valid_to: null  
published: 2023-11-21  
recorded: 2026-11-04  
confidence: 0.95  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-11-04  
checked: 2026-11-04 · its source page states the value and the date  

> Claude 2.1 delivers advancements in key capabilities for enterprises—including an industry-leading 200K token context window, significant reductions in rates of model hallucination, system prompts and our new beta feature: tool use.

What https://www.anthropic.com/news/claude-2-1 says, word for word.

## Sources

- https://www.anthropic.com/news/claude-2-1 (primary, Anthropic, published 2023-11-21)

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